Given: 3500 kcal in 1 pound of fat BMR = weight (in kg) X 1 kcal/kg X 24 hours BMI = weight (kg)/ height (m2) 3300 kcal = energy needed to maintain Sam's weight RDA for protein is 0.8 g protein/kg body weight To convert lbs to kg; weight in pounds/ 2.2 lbs/kg. Example: BW 160lbs/ 2.2lbs/kg = 72.7kg or 73 kg Sam is 24 years old, weighs 190 lbs ( kg round) and is 6'0" tall (1.8 meters) tall. Sam is active, walking about an hour a day 4 to 6 days a week. A. What is Sam's energy needs at rest (BMR)?​